Number of length n+2 0..3 arrays with no pair in any consecutive three terms totalling exactly 3.

A245990

Number of length n+2 0..3 arrays with no pair in any consecutive three terms totalling exactly 3.

Terms

    a(0) =28a(1) =68a(2) =164a(3) =396a(4) =956a(5) =2308a(6) =5572a(7) =13452a(8) =32476a(9) =78404a(10) =189284a(11) =456972a(12) =1103228a(13) =2663428a(14) =6430084a(15) =15523596a(16) =37477276a(17) =90478148a(18) =218433572a(19) =527345292a(20) =1273124156a(21) =3073593604a(22) =7420311364a(23) =17914216332a(24) =43248744028a(25) =104411704388

External references